Means for separating magnetic particles from paper-pulp.



No. 736,298. 'PATENTED AUG. 11, 1903..

Y j V G.J.REED. MEANS FOR SEPARATING MAGNETIC PARTICLES FROM PAPER PULP.

' APPLIOATION FILED AUG. 15, 1902. V I

F0 mpnnn.

WITNESSES Patented August 11, 1903.

CHARLES J. REED, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOSECURITY SYLVANIA.

INVESTMENT COMPANY, A CORPORATION OF PENN- MEANS FOR SEPARATING MAGNETICPARTICLES FROM PAPER-PULP.

SPECIFICATION iprming m of Letters Patent No. 736,298, dated Au ust 11,190:3.

Application filed August 15. 1902. Serial No. 119,762. (No model.)

To all whom it may concern.

Be it known that I, CHARLES J. Rnnma citizen of the United States,residing at Philadelphia, in the county ofPhiladelphia and- "State ofPennsylvania, have invented a new and useful Improvement in Means forSeparating Magnetic Particles from Paper-Pulp, of which the following isa specification.

My invention relates to magnetic separa tors, and particularly todevices of this gen- 7 eral character which are employed for separatingmagnetic particles from paper-pulp and similar liquid materials;

The object of my invention is to provide comparatively simpleandinexpensive apparatus which shallbe free from liability todisarrangement and excessive wear and which shallserve to efiect-ivel yremove all of the magnetic particles from the material treated byit.

My invention is susceptible of various embodiments as regards mechanicaldetails of construction; but I have shown an effective combination andarrangement of apparatus in the accompanying drawings, in which- Figure1 is aview, partially in side elevation and partially in section, andFig. 2 a

plan view, of the entire apparatus employed 1n practicing myinvention.Fig. 3 is a de-.

tail sectional view of one of the magnets and the rotating screen anddriving-gear therefor.

The trough or tank 1 maybe of any suitable form and dimensions and maybe supplied with paper-pulp 2 through the pipe 3 or reservoir, and thetreated material may flow out through the pipe 3", which, as shown,maybe at a higher level than the pipe 3. The tank or trough may besupported by any suitable framework 4 in either a horizontal or aslightly-inclined position and may itself be of such form and dimensionsas to constitute the sole conduit between the source of supply and thereceiving vessel, or it maybe of such dimensions as to serve merely toguide the material and make sure that'it all passes in close proximityto theseparating devices.

. I locate in the tank 1 one or more electromagnets 5, the cores 6 ofwhich are suspended from the top of the tank 1 or from any suitablesupport and project throughopenings 7 in the bottom of the tank. I haveshown two magnets in the present instance, and ordinarily two or morewill probably be found desirable, although the invention is not limitedto any specific number. Each core 6 is provided with one or moregrooves-8, which may be of any desired shape in cross-section and bedisposed at any suitable angle to the axis of the core. The coil orcoils 9, located in the groove or grooves 8, may be supplied withcurrent from any suitable source (not shown) to magnetize the core 5, soas to produce a field of force which extends from one end to the otherof the core at an angle to its axis. In order to conduct the magneticparticles which are attracted to this core through the openings 7, Isurround each core with a cylindrical shell 10 and so support it that itmay be rotated continuously in a clockwise direction, looking downward,preferably at slow speed. The rotation of the shell 10 Will obviouslyserve to convey the magnetic particles through the openings 7, sincethese particles will follow the field of force until the lower end ofthe magnet is reached,when they will drop off the end of the shell. Iprovide a cup or pocket 11 below the openings 7, which preferably hasinclined sides, so that the magnetic particles will gravitate toward thecentral opening, from which they may be withdrawn at intervals by meansof a cook 13 or other suitable device.

The shells 10 may be driven. by any suitable means-such as worm-gearing,belt and pulleys, or a pinion and gears, as indicatedthe drawingsshowing each shell as fastened to the hub of a gear-wheel 14,with whichmeshes a pinion 15, the shaft 16 of which is propelled by any suitablemeans. (Not shown.)

In order that all of the pulp may-h e subjected to the action of themagnet, I provide suitable guides which project within a cerofapproximately an inch between the guides and the cylinders beingsuitable for the purpose. I have indicated a central double guide 17 andtwo outer or single guides 18, which tain distance of the cylinders 10,a distance may be made of sheet metal and fastened in position eitherpermanently or removably by any suitable means.' The form and dimensionsof these guides are obviously not material, provided they are such as toinsure the passage of the entire amount of material within such distanceof the magnets that all of the magnetic particles shall be removedtherefrom.

Instead of causing the material to How into the separator at one end orside and out atthe other it will be understood that the guides andinlets maybe otherwise constructedand arranged, provided only that theconstruction and arrangement shall be such as to insure subjection ofall of the material to the action of the magnet or magnets as it passesthrough the separator.

Other modifications may be made in the apparatus without departing fromthe invention, and I therefore'desire it to be understood thatlimitations are not to be imposed otherwise than by the .prior artandthe terms of the claims.

I claim as my invention 1. In apparatus for separating magneticparticles from liquid material, the combination with a trough or tankcontaining one or more relatively narrow passages through which thematerial flows, of a cylindrical shell having a substantially verticalaxis and located in each passage so as to be submerged in the liquid forthe greater portion of its length, means for rotating said shell orshells and a stationary magnet in each shell having a field of forcethat is disposed at an acute angle to the shell-axis.

2. The combination with a tank or trough adapted to receive a body ofliquid and having one or more restricted passage-ways through which saidliquid flows and a pocket or receptacle below said passage-ways, of amagnet located in each passage-way and having an inclined field of forceextending from end to end, asubstantially vertical shell surround ingeach magnet and projecting, into said pocket or receptacle and means forrotating said shell or shells.

. not having a substantially vertical axis and means for rotating saidshells.

4. In apparatus for separating magnetic particles from paper-pulp, thecombination with a tank or trough having a plurality of passage-ways anda cup or pocket below the same, of magnets located in said passage-waysand having inclined fields of force, substantially vertical shellssurrounding said magnets and means for rotating said shells to conveythe magnetic particles into the cup or pocket.

5. In apparatus for separating magnetic particles from paper-pulp andsimilar material, the combination with a'tank or trough having aplurality of passage-ways and a pocket or cup below the same, ofelectromagnets centrally located in said passage-ways and havinginclined fields of force, metallic shells surrounding said magnets andmeans for rotating said shells.

6. In apparatus for separating magnetic particles from liquid materials,the combination with a stationary electromagnet comprising alongitudinally-grooved core and a coil located in said groove to producea magnetic field, of a substantially vertical shell surrounding saidmagnet, means for rotating said shell, means for causing the material toflow around the shell and in proximity thereto and a receptacle intowhich the lower end of said shell projects.

7. The combination with one or more electromagnets severally constructedto produce magnetic fields which extend angularly from end to end, asubstantially vertical shell surrounding each magnet and means forrotating the same, of a tank or trough for liquid material in which saidshell or shells are .located, said tank or trough having an inletadjacent to its bottom at one side and an outlet adjacent to its top atthe other side of the rotary shell or shells and means for conductingand guiding all of said liquid material in proximity to said shellorshells as it flows through the tank or trough.

8. The combination with a stationary magnetizable core having one ormore longitudinal and angularly-disposed grooves and amagnetizing-winding located in said groove or grooves, of asubstantially vertical, nonmagnetic shell of annular cross-sectionsurrounding said core and winding, means for rotating said shell, meansfor guiding liquid vmaterial to be treated in proximity to said shelland a receptacle into which the lower end of said shell projects.

In testimony whereof I have hereunto subscribed my name this 6th day ofAugust, 1902.

CHARLES J REED.

Witnesses:

JAMES W. LAWS, RoBT. B. FLETCHER.

